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Finding the Fourth Proportional to 221,251.80, 305,309.34 and 125,736.60

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Solution

The fourth proportional to 221,251.80, 305,309.34 and 125,736.60 is: 173,506.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,251.80 : 305,309.34 = 125,736.60 : x
  2. Step 2: Convert to fraction form
    221,251.80/305,309.34 = 125,736.60/x
  3. Step 3: Cross multiply
    221,251.80x = 305,309.34 × 125,736.60
  4. Step 4: Simplify right side
    221,251.80x = 38,388,558,359.84
  5. Step 5: Solve for x
    x = 38,388,558,359.84/221,251.80
  6. Step 6: Final answer
    x = 173,506.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.